Pith Number

pith:Q5AHE57J

pith:2009:Q5AHE57JVTHVP5QD2V6TYSEUKX

not attested not anchored not stored refs pending

Frequency Comparison of Two High-Accuracy Al+ Optical Clocks

C.-W. Chou, D. B. Hume, D. J. Wineland, J. C. J. Koelemeij, T. Rosenband

arxiv:0911.4527 v2 · 2009-11-24 · quant-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Q5AHE57JVTHVP5QD2V6TYSEUKX}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T03:23:56.728340Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

87407277e9accf57f603d57d3c489455e9bc520151403759528e0c42665a7955

Aliases

arxiv: 0911.4527 · arxiv_version: 0911.4527v2 · doi: 10.48550/arxiv.0911.4527 · pith_short_12: Q5AHE57JVTHV · pith_short_16: Q5AHE57JVTHVP5QD · pith_short_8: Q5AHE57J

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/Q5AHE57JVTHVP5QD2V6TYSEUKX \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 87407277e9accf57f603d57d3c489455e9bc520151403759528e0c42665a7955

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cc21d38d6e9a134b347f122cd9978314917c6d2734e000deb1348e5e85bf6497",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/publicdomain/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-11-24T01:57:07Z",
    "title_canon_sha256": "a36f16785fd1d2ac995970a9926bbeefe06e4517d0f913b6d8fc2648d2eb4244"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.4527",
    "kind": "arxiv",
    "version": 2
  }
}